BG1: Chapter 5, Fenton purchases Ankheg shells each for 250, but gives me only 250 for all I have. Letting him purchase each shell individually gives 250 each time.
I don't remember seeing this in the original game, but I didn't check on it.
Whoops forgot to tell, I'm using Git trunk, on commit 4178701.
That's how it was in the original.
This dialog excerpt shows everything:
SAY #15160 / ~Fine work. I'll pay you 250 gp for all of your ankheg heads.~ /
IF ~~ THEN DO ~TakePartyItemAll("MISC12")